/Engine/Source/Runtime/SlateCore/Public/Input/Events.h
FPointerEvent ( [FInputDeviceId](API\Runtime\Core\Misc\FInputDeviceId) InDeviceId, uint32 InPointerIndex, const [UE::Slate::FDeprecateVector2DParameter](API\Runtime\SlateCore\Types\FDeprecateVector2DParameter) & InScreenSpacePosition, const [UE::Slate::FDeprecateVector2DParameter](API\Runtime\SlateCore\Types\FDeprecateVector2DParameter) & InLastScreenSpacePosition, float InForce, bool bPressLeftMouseButton, bool bInIsForceChanged, bool bInIsFirstMove, const [FModifierKeysState](API\Runtime\ApplicationCore\GenericPlatform\FModifierKeysState) & InModifierKeys, uint32 InTouchpadIndex, const [TOptional](API\Runtime\Core\IO\TOptional)< int32 > InOptionalSlateUserIndex )